21102101001002 has 16 divisors (see below), whose sum is σ = 36198323969472. Its totient is φ = 9037934151360.

The previous prime is 21102101000989. The next prime is 21102101001019. The reversal of 21102101001002 is 20010010120112.

It is a super-2 number, since 2×21102101001002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485262524 + ... + 485306007.

It is an arithmetic number, because the mean of its divisors is an integer number (2262395248092).

Almost surely, 2^{21102101001002} is an apocalyptic number.

21102101001002 is a deficient number, since it is larger than the sum of its proper divisors (15096222968470).

21102101001002 is a wasteful number, since it uses less digits than its factorization.

21102101001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970570093.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21102101001002 its reverse (20010010120112), we get a palindrome (41112111121114).

The spelling of 21102101001002 in words is "twenty-one trillion, one hundred two billion, one hundred one million, one thousand, two".